[URL="http://api.tweetmeme.com/share?url=http://espn.go.com/nfl/story/_/id/6893258/marcell-dareus-buffalo-bills-hurts-ankle-waiting-test-results-report-says&service=bit.ly&source=espn"][IMG]http://api.tweetmeme.com/imagebutton.gif?url=http://espn.go.com/nfl/story/_/id/6893258/marcell-dareus-buffalo-bills-hurts-ankle-waiting-test-results-report-says[/IMG][/URL]A person familiar with defensive lineman Marcell Dareus' ankle injury has told The Associated Press that the Buffalo Bills are awaiting tests to determine its severity after the rookie first-round draft pick was hurt in practice.